Introduction
This guide shows how to replace the rotation button that controls the oscillation of your fan. Replacing the rotation button requires soldering, so it may be a little tricky for those of you who are inexperienced with soldering.
Tools
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Pull the front and back parts of the case away from each other until the back is free from the front. This may require a large amount of force.
 
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Remove the two 3mm screws found just below the top of the device using the Phillips #0 Screwdriver.
 
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Pry off the control panel by forcefully lifting the tab located inside the front of the fan with the plastic opening tool.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.